2 Unix SMB/CIFS implementation.
4 Winbind daemon connection manager
6 Copyright (C) Tim Potter 2001
7 Copyright (C) Andrew Bartlett 2002
8 Copyright (C) Gerald (Jerry) Carter 2003-2005.
9 Copyright (C) Volker Lendecke 2004-2005
10 Copyright (C) Jeremy Allison 2006
12 This program is free software; you can redistribute it and/or modify
13 it under the terms of the GNU General Public License as published by
14 the Free Software Foundation; either version 3 of the License, or
15 (at your option) any later version.
17 This program is distributed in the hope that it will be useful,
18 but WITHOUT ANY WARRANTY; without even the implied warranty of
19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 GNU General Public License for more details.
22 You should have received a copy of the GNU General Public License
23 along with this program. If not, see <http://www.gnu.org/licenses/>.
27 We need to manage connections to domain controllers without having to
28 mess up the main winbindd code with other issues. The aim of the
29 connection manager is to:
31 - make connections to domain controllers and cache them
32 - re-establish connections when networks or servers go down
33 - centralise the policy on connection timeouts, domain controller
35 - manage re-entrancy for when winbindd becomes able to handle
36 multiple outstanding rpc requests
38 Why not have connection management as part of the rpc layer like tng?
39 Good question. This code may morph into libsmb/rpc_cache.c or something
40 like that but at the moment it's simply staying as part of winbind. I
41 think the TNG architecture of forcing every user of the rpc layer to use
42 the connection caching system is a bad idea. It should be an optional
43 method of using the routines.
45 The TNG design is quite good but I disagree with some aspects of the
53 - I'm pretty annoyed by all the make_nmb_name() stuff. It should be
54 moved down into another function.
56 - Take care when destroying cli_structs as they can be shared between
63 #include "../libcli/auth/libcli_auth.h"
64 #include "../librpc/gen_ndr/ndr_netlogon_c.h"
65 #include "rpc_client/cli_pipe.h"
66 #include "rpc_client/cli_netlogon.h"
67 #include "../librpc/gen_ndr/ndr_samr_c.h"
68 #include "../librpc/gen_ndr/ndr_lsa_c.h"
69 #include "rpc_client/cli_lsarpc.h"
70 #include "../librpc/gen_ndr/ndr_dssetup_c.h"
71 #include "libads/sitename_cache.h"
72 #include "libsmb/libsmb.h"
73 #include "libsmb/clidgram.h"
76 #include "../libcli/security/security.h"
79 #include "auth/gensec/gensec.h"
80 #include "../libcli/smb/smbXcli_base.h"
81 #include "libcli/auth/netlogon_creds_cli.h"
83 #include "rpc_server/rpc_ncacn_np.h"
84 #include "auth/credentials/credentials.h"
85 #include "lib/param/param.h"
88 #define DBGC_CLASS DBGC_WINBIND
92 struct sockaddr_storage ss;
95 extern struct winbindd_methods reconnect_methods;
96 extern bool override_logfile;
98 static NTSTATUS init_dc_connection_network(struct winbindd_domain *domain, bool need_rw_dc);
99 static void set_dc_type_and_flags( struct winbindd_domain *domain );
100 static bool set_dc_type_and_flags_trustinfo( struct winbindd_domain *domain );
101 static bool get_dcs(TALLOC_CTX *mem_ctx, struct winbindd_domain *domain,
102 struct dc_name_ip **dcs, int *num_dcs);
104 /****************************************************************
105 Child failed to find DC's. Reschedule check.
106 ****************************************************************/
108 static void msg_failed_to_go_online(struct messaging_context *msg,
111 struct server_id server_id,
114 struct winbindd_domain *domain;
115 const char *domainname = (const char *)data->data;
117 if (data->data == NULL || data->length == 0) {
121 DEBUG(5,("msg_fail_to_go_online: received for domain %s.\n", domainname));
123 for (domain = domain_list(); domain; domain = domain->next) {
124 if (domain->internal) {
128 if (strequal(domain->name, domainname)) {
129 if (domain->online) {
130 /* We're already online, ignore. */
131 DEBUG(5,("msg_fail_to_go_online: domain %s "
132 "already online.\n", domainname));
136 /* Reschedule the online check. */
137 set_domain_offline(domain);
143 /****************************************************************
144 Actually cause a reconnect from a message.
145 ****************************************************************/
147 static void msg_try_to_go_online(struct messaging_context *msg,
150 struct server_id server_id,
153 struct winbindd_domain *domain;
154 const char *domainname = (const char *)data->data;
156 if (data->data == NULL || data->length == 0) {
160 DEBUG(5,("msg_try_to_go_online: received for domain %s.\n", domainname));
162 for (domain = domain_list(); domain; domain = domain->next) {
163 if (domain->internal) {
167 if (strequal(domain->name, domainname)) {
169 if (domain->online) {
170 /* We're already online, ignore. */
171 DEBUG(5,("msg_try_to_go_online: domain %s "
172 "already online.\n", domainname));
176 /* This call takes care of setting the online
177 flag to true if we connected, or re-adding
178 the offline handler if false. Bypasses online
179 check so always does network calls. */
181 init_dc_connection_network(domain, true);
187 /****************************************************************
188 Fork a child to try and contact a DC. Do this as contacting a
189 DC requires blocking lookups and we don't want to block our
191 ****************************************************************/
193 static bool fork_child_dc_connect(struct winbindd_domain *domain)
195 struct dc_name_ip *dcs = NULL;
197 TALLOC_CTX *mem_ctx = NULL;
198 pid_t parent_pid = getpid();
202 if (domain->dc_probe_pid != (pid_t)-1) {
204 * We might already have a DC probe
205 * child working, check.
207 if (process_exists_by_pid(domain->dc_probe_pid)) {
208 DEBUG(10,("fork_child_dc_connect: pid %u already "
209 "checking for DC's.\n",
210 (unsigned int)domain->dc_probe_pid));
213 domain->dc_probe_pid = (pid_t)-1;
216 domain->dc_probe_pid = fork();
218 if (domain->dc_probe_pid == (pid_t)-1) {
219 DEBUG(0, ("fork_child_dc_connect: Could not fork: %s\n", strerror(errno)));
223 if (domain->dc_probe_pid != (pid_t)0) {
225 messaging_register(winbind_messaging_context(), NULL,
226 MSG_WINBIND_TRY_TO_GO_ONLINE,
227 msg_try_to_go_online);
228 messaging_register(winbind_messaging_context(), NULL,
229 MSG_WINBIND_FAILED_TO_GO_ONLINE,
230 msg_failed_to_go_online);
236 /* Leave messages blocked - we will never process one. */
238 if (!override_logfile) {
239 if (asprintf(&lfile, "%s/log.winbindd-dc-connect", get_dyn_LOGFILEBASE()) == -1) {
240 DEBUG(0, ("fork_child_dc_connect: out of memory.\n"));
245 status = winbindd_reinit_after_fork(NULL, lfile);
246 if (!NT_STATUS_IS_OK(status)) {
247 DEBUG(1, ("winbindd_reinit_after_fork failed: %s\n",
249 messaging_send_buf(winbind_messaging_context(),
250 pid_to_procid(parent_pid),
251 MSG_WINBIND_FAILED_TO_GO_ONLINE,
252 (const uint8_t *)domain->name,
253 strlen(domain->name)+1);
258 mem_ctx = talloc_init("fork_child_dc_connect");
260 DEBUG(0,("talloc_init failed.\n"));
261 messaging_send_buf(winbind_messaging_context(),
262 pid_to_procid(parent_pid),
263 MSG_WINBIND_FAILED_TO_GO_ONLINE,
264 (const uint8_t *)domain->name,
265 strlen(domain->name)+1);
269 if ((!get_dcs(mem_ctx, domain, &dcs, &num_dcs)) || (num_dcs == 0)) {
270 /* Still offline ? Can't find DC's. */
271 messaging_send_buf(winbind_messaging_context(),
272 pid_to_procid(parent_pid),
273 MSG_WINBIND_FAILED_TO_GO_ONLINE,
274 (const uint8_t *)domain->name,
275 strlen(domain->name)+1);
279 /* We got a DC. Send a message to our parent to get it to
280 try and do the same. */
282 messaging_send_buf(winbind_messaging_context(),
283 pid_to_procid(parent_pid),
284 MSG_WINBIND_TRY_TO_GO_ONLINE,
285 (const uint8_t *)domain->name,
286 strlen(domain->name)+1);
290 /****************************************************************
291 Handler triggered if we're offline to try and detect a DC.
292 ****************************************************************/
294 static void check_domain_online_handler(struct tevent_context *ctx,
295 struct tevent_timer *te,
299 struct winbindd_domain *domain =
300 (struct winbindd_domain *)private_data;
302 DEBUG(10,("check_domain_online_handler: called for domain "
303 "%s (online = %s)\n", domain->name,
304 domain->online ? "True" : "False" ));
306 TALLOC_FREE(domain->check_online_event);
308 /* Are we still in "startup" mode ? */
310 if (domain->startup && (time_mono(NULL) > domain->startup_time + 30)) {
311 /* No longer in "startup" mode. */
312 DEBUG(10,("check_domain_online_handler: domain %s no longer in 'startup' mode.\n",
314 domain->startup = False;
317 /* We've been told to stay offline, so stay
320 if (get_global_winbindd_state_offline()) {
321 DEBUG(10,("check_domain_online_handler: domain %s remaining globally offline\n",
326 /* Fork a child to test if it can contact a DC.
327 If it can then send ourselves a message to
328 cause a reconnect. */
330 fork_child_dc_connect(domain);
333 /****************************************************************
334 If we're still offline setup the timeout check.
335 ****************************************************************/
337 static void calc_new_online_timeout_check(struct winbindd_domain *domain)
339 int wbr = lp_winbind_reconnect_delay();
341 if (domain->startup) {
342 domain->check_online_timeout = 10;
343 } else if (domain->check_online_timeout < wbr) {
344 domain->check_online_timeout = wbr;
348 void winbind_msg_domain_offline(struct messaging_context *msg_ctx,
351 struct server_id server_id,
354 const char *domain_name = (const char *)data->data;
355 struct winbindd_domain *domain;
357 domain = find_domain_from_name_noinit(domain_name);
358 if (domain == NULL) {
362 domain->online = false;
364 DEBUG(10, ("Domain %s is marked as offline now.\n",
368 void winbind_msg_domain_online(struct messaging_context *msg_ctx,
371 struct server_id server_id,
374 const char *domain_name = (const char *)data->data;
375 struct winbindd_domain *domain;
377 domain = find_domain_from_name_noinit(domain_name);
378 if (domain == NULL) {
382 domain->online = true;
384 DEBUG(10, ("Domain %s is marked as online now.\n",
388 /****************************************************************
389 Set domain offline and also add handler to put us back online
391 ****************************************************************/
393 void set_domain_offline(struct winbindd_domain *domain)
395 pid_t parent_pid = getppid();
397 DEBUG(10,("set_domain_offline: called for domain %s\n",
400 TALLOC_FREE(domain->check_online_event);
402 if (domain->internal) {
403 DEBUG(3,("set_domain_offline: domain %s is internal - logic error.\n",
408 domain->online = False;
410 /* Offline domains are always initialized. They're
411 re-initialized when they go back online. */
413 domain->initialized = True;
415 /* We only add the timeout handler that checks and
416 allows us to go back online when we've not
417 been told to remain offline. */
419 if (get_global_winbindd_state_offline()) {
420 DEBUG(10,("set_domain_offline: domain %s remaining globally offline\n",
425 /* If we're in startup mode, check again in 10 seconds, not in
426 lp_winbind_reconnect_delay() seconds (which is 30 seconds by default). */
428 calc_new_online_timeout_check(domain);
430 domain->check_online_event = tevent_add_timer(winbind_event_context(),
432 timeval_current_ofs(domain->check_online_timeout,0),
433 check_domain_online_handler,
436 /* The above *has* to succeed for winbindd to work. */
437 if (!domain->check_online_event) {
438 smb_panic("set_domain_offline: failed to add online handler");
441 DEBUG(10,("set_domain_offline: added event handler for domain %s\n",
444 /* Send a message to the parent that the domain is offline. */
445 if (parent_pid > 1 && !domain->internal) {
446 messaging_send_buf(winbind_messaging_context(),
447 pid_to_procid(parent_pid),
448 MSG_WINBIND_DOMAIN_OFFLINE,
449 (uint8 *)domain->name,
450 strlen(domain->name) + 1);
453 /* Send an offline message to the idmap child when our
454 primary domain goes offline */
456 if ( domain->primary ) {
457 struct winbindd_child *idmap = idmap_child();
459 if ( idmap->pid != 0 ) {
460 messaging_send_buf(winbind_messaging_context(),
461 pid_to_procid(idmap->pid),
463 (const uint8_t *)domain->name,
464 strlen(domain->name)+1);
471 /****************************************************************
472 Set domain online - if allowed.
473 ****************************************************************/
475 static void set_domain_online(struct winbindd_domain *domain)
477 pid_t parent_pid = getppid();
479 DEBUG(10,("set_domain_online: called for domain %s\n",
482 if (domain->internal) {
483 DEBUG(3,("set_domain_online: domain %s is internal - logic error.\n",
488 if (get_global_winbindd_state_offline()) {
489 DEBUG(10,("set_domain_online: domain %s remaining globally offline\n",
494 winbindd_set_locator_kdc_envs(domain);
496 /* If we are waiting to get a krb5 ticket, trigger immediately. */
497 ccache_regain_all_now();
499 /* Ok, we're out of any startup mode now... */
500 domain->startup = False;
502 if (domain->online == False) {
503 /* We were offline - now we're online. We default to
504 using the MS-RPC backend if we started offline,
505 and if we're going online for the first time we
506 should really re-initialize the backends and the
507 checks to see if we're talking to an AD or NT domain.
510 domain->initialized = False;
512 /* 'reconnect_methods' is the MS-RPC backend. */
513 if (domain->backend == &reconnect_methods) {
514 domain->backend = NULL;
518 /* Ensure we have no online timeout checks. */
519 domain->check_online_timeout = 0;
520 TALLOC_FREE(domain->check_online_event);
522 /* Ensure we ignore any pending child messages. */
523 messaging_deregister(winbind_messaging_context(),
524 MSG_WINBIND_TRY_TO_GO_ONLINE, NULL);
525 messaging_deregister(winbind_messaging_context(),
526 MSG_WINBIND_FAILED_TO_GO_ONLINE, NULL);
528 domain->online = True;
530 /* Send a message to the parent that the domain is online. */
531 if (parent_pid > 1 && !domain->internal) {
532 messaging_send_buf(winbind_messaging_context(),
533 pid_to_procid(parent_pid),
534 MSG_WINBIND_DOMAIN_ONLINE,
535 (uint8 *)domain->name,
536 strlen(domain->name) + 1);
539 /* Send an online message to the idmap child when our
540 primary domain comes online */
542 if ( domain->primary ) {
543 struct winbindd_child *idmap = idmap_child();
545 if ( idmap->pid != 0 ) {
546 messaging_send_buf(winbind_messaging_context(),
547 pid_to_procid(idmap->pid),
549 (const uint8_t *)domain->name,
550 strlen(domain->name)+1);
557 /****************************************************************
558 Requested to set a domain online.
559 ****************************************************************/
561 void set_domain_online_request(struct winbindd_domain *domain)
565 DEBUG(10,("set_domain_online_request: called for domain %s\n",
568 if (get_global_winbindd_state_offline()) {
569 DEBUG(10,("set_domain_online_request: domain %s remaining globally offline\n",
574 if (domain->internal) {
575 DEBUG(10, ("set_domain_online_request: Internal domains are "
580 /* We've been told it's safe to go online and
581 try and connect to a DC. But I don't believe it
582 because network manager seems to lie.
583 Wait at least 5 seconds. Heuristics suck... */
588 /* Go into "startup" mode again. */
589 domain->startup_time = time_mono(NULL);
590 domain->startup = True;
594 if (!domain->check_online_event) {
595 /* If we've come from being globally offline we
596 don't have a check online event handler set.
597 We need to add one now we're trying to go
600 DEBUG(10,("set_domain_online_request: domain %s was globally offline.\n",
604 TALLOC_FREE(domain->check_online_event);
606 domain->check_online_event = tevent_add_timer(winbind_event_context(),
609 check_domain_online_handler,
612 /* The above *has* to succeed for winbindd to work. */
613 if (!domain->check_online_event) {
614 smb_panic("set_domain_online_request: failed to add online handler");
618 /****************************************************************
619 Add -ve connection cache entries for domain and realm.
620 ****************************************************************/
622 static void winbind_add_failed_connection_entry(
623 const struct winbindd_domain *domain,
627 add_failed_connection_entry(domain->name, server, result);
628 /* If this was the saf name for the last thing we talked to,
630 saf_delete(domain->name);
631 if (domain->alt_name != NULL) {
632 add_failed_connection_entry(domain->alt_name, server, result);
633 saf_delete(domain->alt_name);
635 winbindd_unset_locator_kdc_env(domain);
638 /* Choose between anonymous or authenticated connections. We need to use
639 an authenticated connection if DCs have the RestrictAnonymous registry
640 entry set > 0, or the "Additional restrictions for anonymous
641 connections" set in the win2k Local Security Policy.
643 Caller to free() result in domain, username, password
646 static void cm_get_ipc_userpass(char **username, char **domain, char **password)
648 *username = (char *)secrets_fetch(SECRETS_AUTH_USER, NULL);
649 *domain = (char *)secrets_fetch(SECRETS_AUTH_DOMAIN, NULL);
650 *password = (char *)secrets_fetch(SECRETS_AUTH_PASSWORD, NULL);
652 if (*username && **username) {
654 if (!*domain || !**domain)
655 *domain = smb_xstrdup(lp_workgroup());
657 if (!*password || !**password)
658 *password = smb_xstrdup("");
660 DEBUG(3, ("cm_get_ipc_userpass: Retrieved auth-user from secrets.tdb [%s\\%s]\n",
661 *domain, *username));
664 DEBUG(3, ("cm_get_ipc_userpass: No auth-user defined\n"));
665 *username = smb_xstrdup("");
666 *domain = smb_xstrdup("");
667 *password = smb_xstrdup("");
671 static NTSTATUS cm_get_ipc_credentials(TALLOC_CTX *mem_ctx,
672 struct cli_credentials **_creds)
675 TALLOC_CTX *frame = talloc_stackframe();
676 NTSTATUS status = NT_STATUS_INTERNAL_ERROR;
677 struct loadparm_context *lp_ctx;
678 char *username = NULL;
679 char *netbios_domain = NULL;
680 char *password = NULL;
681 struct cli_credentials *creds = NULL;
684 cm_get_ipc_userpass(&username, &netbios_domain, &password);
686 lp_ctx = loadparm_init_s3(frame, loadparm_s3_helpers());
687 if (lp_ctx == NULL) {
688 DEBUG(1, ("loadparm_init_s3 failed\n"));
689 status = NT_STATUS_INTERNAL_ERROR;
693 creds = cli_credentials_init(mem_ctx);
695 status = NT_STATUS_NO_MEMORY;
699 cli_credentials_set_conf(creds, lp_ctx);
700 cli_credentials_set_kerberos_state(creds, CRED_DONT_USE_KERBEROS);
702 ok = cli_credentials_set_domain(creds, netbios_domain, CRED_SPECIFIED);
704 status = NT_STATUS_NO_MEMORY;
708 ok = cli_credentials_set_username(creds, username, CRED_SPECIFIED);
710 status = NT_STATUS_NO_MEMORY;
714 ok = cli_credentials_set_password(creds, password, CRED_SPECIFIED);
716 status = NT_STATUS_NO_MEMORY;
722 status = NT_STATUS_OK;
726 SAFE_FREE(netbios_domain);
732 static bool cm_is_ipc_credentials(struct cli_credentials *creds)
734 TALLOC_CTX *frame = talloc_stackframe();
735 char *ipc_account = NULL;
736 char *ipc_domain = NULL;
737 char *ipc_password = NULL;
738 const char *creds_account = NULL;
739 const char *creds_domain = NULL;
740 const char *creds_password = NULL;
743 cm_get_ipc_userpass(&ipc_account, &ipc_domain, &ipc_password);
745 creds_account = cli_credentials_get_username(creds);
746 creds_domain = cli_credentials_get_domain(creds);
747 creds_password = cli_credentials_get_password(creds);
749 if (!strequal(ipc_domain, creds_domain)) {
753 if (!strequal(ipc_account, creds_account)) {
757 if (!strcsequal(ipc_password, creds_password)) {
763 SAFE_FREE(ipc_account);
764 SAFE_FREE(ipc_domain);
765 SAFE_FREE(ipc_password);
770 static bool get_dc_name_via_netlogon(struct winbindd_domain *domain,
772 struct sockaddr_storage *dc_ss)
774 struct winbindd_domain *our_domain = NULL;
775 struct rpc_pipe_client *netlogon_pipe = NULL;
779 unsigned int orig_timeout;
780 const char *tmp = NULL;
782 struct dcerpc_binding_handle *b;
784 /* Hmmmm. We can only open one connection to the NETLOGON pipe at the
791 if (domain->primary) {
795 our_domain = find_our_domain();
797 if ((mem_ctx = talloc_init("get_dc_name_via_netlogon")) == NULL) {
801 result = cm_connect_netlogon(our_domain, &netlogon_pipe);
802 if (!NT_STATUS_IS_OK(result)) {
803 talloc_destroy(mem_ctx);
807 b = netlogon_pipe->binding_handle;
809 /* This call can take a long time - allow the server to time out.
810 35 seconds should do it. */
812 orig_timeout = rpccli_set_timeout(netlogon_pipe, 35000);
814 if (our_domain->active_directory) {
815 struct netr_DsRGetDCNameInfo *domain_info = NULL;
817 result = dcerpc_netr_DsRGetDCName(b,
826 if (NT_STATUS_IS_OK(result) && W_ERROR_IS_OK(werr)) {
828 mem_ctx, domain_info->dc_unc);
830 DEBUG(0, ("talloc_strdup failed\n"));
831 talloc_destroy(mem_ctx);
834 if (domain->alt_name == NULL) {
835 domain->alt_name = talloc_strdup(domain,
836 domain_info->domain_name);
837 if (domain->alt_name == NULL) {
838 DEBUG(0, ("talloc_strdup failed\n"));
839 talloc_destroy(mem_ctx);
843 if (domain->forest_name == NULL) {
844 domain->forest_name = talloc_strdup(domain,
845 domain_info->forest_name);
846 if (domain->forest_name == NULL) {
847 DEBUG(0, ("talloc_strdup failed\n"));
848 talloc_destroy(mem_ctx);
854 result = dcerpc_netr_GetAnyDCName(b, mem_ctx,
861 /* And restore our original timeout. */
862 rpccli_set_timeout(netlogon_pipe, orig_timeout);
864 if (!NT_STATUS_IS_OK(result)) {
865 DEBUG(10,("dcerpc_netr_GetAnyDCName failed: %s\n",
867 talloc_destroy(mem_ctx);
871 if (!W_ERROR_IS_OK(werr)) {
872 DEBUG(10,("dcerpc_netr_GetAnyDCName failed: %s\n",
874 talloc_destroy(mem_ctx);
878 /* dcerpc_netr_GetAnyDCName gives us a name with \\ */
879 p = strip_hostname(tmp);
883 talloc_destroy(mem_ctx);
885 DEBUG(10,("dcerpc_netr_GetAnyDCName returned %s\n", dcname));
887 if (!resolve_name(dcname, dc_ss, 0x20, true)) {
895 * Helper function to assemble trust password and account name
897 static NTSTATUS get_trust_credentials(struct winbindd_domain *domain,
900 struct cli_credentials **_creds)
902 const struct winbindd_domain *creds_domain = NULL;
903 struct cli_credentials *creds;
905 bool force_machine_account = false;
907 /* If we are a DC and this is not our own domain */
909 if (!domain->active_directory) {
912 * For non active directory domains
913 * we can only use NTLMSSP for SMB.
915 * But the trust account is not allowed
916 * to use SMB with NTLMSSP.
918 force_machine_account = true;
922 if (IS_DC && !force_machine_account) {
923 creds_domain = domain;
925 creds_domain = find_our_domain();
926 if (creds_domain == NULL) {
927 return NT_STATUS_INVALID_SERVER_STATE;
931 status = pdb_get_trust_credentials(creds_domain->name,
932 creds_domain->alt_name,
935 if (!NT_STATUS_IS_OK(status)) {
939 if (domain->primary && lp_security() == SEC_ADS) {
940 cli_credentials_set_kerberos_state(creds,
941 CRED_AUTO_USE_KERBEROS);
942 } else if (domain->active_directory) {
943 cli_credentials_set_kerberos_state(creds,
944 CRED_MUST_USE_KERBEROS);
946 cli_credentials_set_kerberos_state(creds,
947 CRED_DONT_USE_KERBEROS);
950 if (creds_domain != domain) {
952 * We can only use schannel against a direct trust
954 cli_credentials_set_secure_channel_type(creds,
963 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
966 status = cm_get_ipc_credentials(mem_ctx, &creds);
967 if (!NT_STATUS_IS_OK(status)) {
975 /************************************************************************
976 Given a fd with a just-connected TCP connection to a DC, open a connection
978 ************************************************************************/
980 static NTSTATUS cm_prepare_connection(struct winbindd_domain *domain,
982 const char *controller,
983 struct cli_state **cli,
986 bool try_ipc_auth = false;
987 const char *machine_password = NULL;
988 const char *machine_krb5_principal = NULL;
989 const char *machine_account = NULL;
990 const char *machine_domain = NULL;
992 struct cli_credentials *creds = NULL;
993 enum credentials_use_kerberos krb5_state;
995 struct named_mutex *mutex;
997 NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
999 enum smb_signing_setting smb_sign_client_connections = lp_client_signing();
1001 if (smb_sign_client_connections == SMB_SIGNING_DEFAULT) {
1003 * If we are connecting to our own AD domain, require
1004 * smb signing to disrupt MITM attacks
1006 if (domain->primary && lp_security() == SEC_ADS) {
1007 smb_sign_client_connections = SMB_SIGNING_REQUIRED;
1009 * If we are in or are an AD domain and connecting to another
1010 * AD domain in our forest
1011 * then require smb signing to disrupt MITM attacks
1013 } else if ((lp_security() == SEC_ADS ||
1014 lp_server_role() == ROLE_ACTIVE_DIRECTORY_DC)
1015 && domain->active_directory
1016 && (domain->domain_trust_attribs
1017 & LSA_TRUST_ATTRIBUTE_WITHIN_FOREST)) {
1018 smb_sign_client_connections = SMB_SIGNING_REQUIRED;
1022 DEBUG(10,("cm_prepare_connection: connecting to DC %s for domain %s\n",
1023 controller, domain->name ));
1027 mutex = grab_named_mutex(talloc_tos(), controller,
1028 WINBIND_SERVER_MUTEX_WAIT_TIME);
1029 if (mutex == NULL) {
1031 DEBUG(0,("cm_prepare_connection: mutex grab failed for %s\n",
1033 result = NT_STATUS_POSSIBLE_DEADLOCK;
1037 flags |= CLI_FULL_CONNECTION_USE_KERBEROS;
1039 *cli = cli_state_create(NULL, sockfd,
1040 controller, domain->alt_name,
1041 smb_sign_client_connections, flags);
1044 DEBUG(1, ("Could not cli_initialize\n"));
1045 result = NT_STATUS_NO_MEMORY;
1049 cli_set_timeout(*cli, 10000); /* 10 seconds */
1051 result = smbXcli_negprot((*cli)->conn, (*cli)->timeout,
1052 lp_client_min_protocol(),
1053 lp_winbindd_max_protocol());
1055 if (!NT_STATUS_IS_OK(result)) {
1056 DEBUG(1, ("cli_negprot failed: %s\n", nt_errstr(result)));
1060 if (smbXcli_conn_protocol((*cli)->conn) >= PROTOCOL_NT1 &&
1061 smb1cli_conn_capabilities((*cli)->conn) & CAP_EXTENDED_SECURITY) {
1062 try_ipc_auth = true;
1063 } else if (smbXcli_conn_protocol((*cli)->conn) >= PROTOCOL_SMB2_02) {
1064 try_ipc_auth = true;
1065 } else if (smb_sign_client_connections == SMB_SIGNING_REQUIRED) {
1067 * If we are forcing on SMB signing, then we must
1068 * require authentication unless this is a one-way
1069 * trust, and we have no stored user/password
1071 try_ipc_auth = true;
1075 result = get_trust_credentials(domain, talloc_tos(), false, &creds);
1076 if (!NT_STATUS_IS_OK(result)) {
1077 DEBUG(1, ("get_trust_credentials(%s) failed: %s\n",
1078 domain->name, nt_errstr(result)));
1083 * Without SPNEGO or NTLMSSP (perhaps via SMB2) we
1084 * would try and authentication with our machine
1085 * account password and fail. This is very rare in
1086 * the modern world however
1088 creds = cli_credentials_init_anon(talloc_tos());
1089 if (creds == NULL) {
1090 result = NT_STATUS_NO_MEMORY;
1091 DEBUG(1, ("cli_credentials_init_anon(%s) failed: %s\n",
1092 domain->name, nt_errstr(result)));
1097 krb5_state = cli_credentials_get_kerberos_state(creds);
1099 machine_krb5_principal = cli_credentials_get_principal(creds,
1101 if (machine_krb5_principal == NULL) {
1102 krb5_state = CRED_DONT_USE_KERBEROS;
1105 machine_account = cli_credentials_get_username(creds);
1106 machine_password = cli_credentials_get_password(creds);
1107 machine_domain = cli_credentials_get_domain(creds);
1109 if (krb5_state != CRED_DONT_USE_KERBEROS) {
1111 /* Try a krb5 session */
1113 (*cli)->use_kerberos = True;
1114 DEBUG(5, ("connecting to %s from %s with kerberos principal "
1115 "[%s] and realm [%s]\n", controller, lp_netbios_name(),
1116 machine_krb5_principal, domain->alt_name));
1118 winbindd_set_locator_kdc_envs(domain);
1120 result = cli_session_setup(*cli,
1121 machine_krb5_principal,
1123 strlen(machine_password)+1,
1125 strlen(machine_password)+1,
1128 if (NT_STATUS_IS_OK(result)) {
1129 goto session_setup_done;
1132 DEBUG(4,("failed kerberos session setup with %s\n",
1133 nt_errstr(result)));
1136 if (krb5_state != CRED_MUST_USE_KERBEROS) {
1137 /* Fall back to non-kerberos session setup using NTLMSSP SPNEGO with the machine account. */
1138 (*cli)->use_kerberos = False;
1140 DEBUG(5, ("connecting to %s from %s using NTLMSSP with username "
1141 "[%s]\\[%s]\n", controller, lp_netbios_name(),
1142 machine_domain, machine_account));
1144 result = cli_session_setup(*cli,
1147 strlen(machine_password)+1,
1149 strlen(machine_password)+1,
1153 if (NT_STATUS_IS_OK(result)) {
1154 goto session_setup_done;
1158 * If we are not going to validiate the conneciton
1159 * with SMB signing, then allow us to fall back to
1162 if (NT_STATUS_EQUAL(result, NT_STATUS_NOLOGON_WORKSTATION_TRUST_ACCOUNT)
1163 || NT_STATUS_EQUAL(result, NT_STATUS_TRUSTED_DOMAIN_FAILURE)
1164 || NT_STATUS_EQUAL(result, NT_STATUS_INVALID_ACCOUNT_NAME)
1165 || NT_STATUS_EQUAL(result, NT_STATUS_LOGON_FAILURE))
1167 if (cli_credentials_is_anonymous(creds)) {
1171 if (!cm_is_ipc_credentials(creds)) {
1175 if (smb_sign_client_connections == SMB_SIGNING_REQUIRED) {
1182 DEBUG(4, ("authenticated session setup failed with %s\n",
1183 nt_errstr(result)));
1188 result = cm_get_ipc_credentials(talloc_tos(), &creds);
1189 if (!NT_STATUS_IS_OK(result)) {
1193 if (cli_credentials_is_anonymous(creds)) {
1198 machine_account = cli_credentials_get_username(creds);
1199 machine_password = cli_credentials_get_password(creds);
1200 machine_domain = cli_credentials_get_domain(creds);
1202 /* Fall back to non-kerberos session setup using NTLMSSP SPNEGO with the ipc creds. */
1203 (*cli)->use_kerberos = False;
1205 DEBUG(5, ("connecting to %s from %s using NTLMSSP with username "
1206 "[%s]\\[%s]\n", controller, lp_netbios_name(),
1207 machine_domain, machine_account));
1209 result = cli_session_setup(*cli,
1212 strlen(machine_password)+1,
1214 strlen(machine_password)+1,
1217 if (NT_STATUS_IS_OK(result)) {
1218 goto session_setup_done;
1222 * If we are not going to validiate the conneciton
1223 * with SMB signing, then allow us to fall back to
1226 if (NT_STATUS_EQUAL(result, NT_STATUS_NOLOGON_WORKSTATION_TRUST_ACCOUNT)
1227 || NT_STATUS_EQUAL(result, NT_STATUS_TRUSTED_DOMAIN_FAILURE)
1228 || NT_STATUS_EQUAL(result, NT_STATUS_LOGON_FAILURE))
1233 DEBUG(4, ("authenticated session setup failed with %s\n",
1234 nt_errstr(result)));
1240 if (smb_sign_client_connections == SMB_SIGNING_REQUIRED) {
1244 /* Fall back to anonymous connection, this might fail later */
1245 DEBUG(10,("cm_prepare_connection: falling back to anonymous "
1246 "connection for DC %s\n",
1249 (*cli)->use_kerberos = False;
1251 result = cli_session_setup(*cli, "", "", 0, "", 0, "");
1252 if (NT_STATUS_IS_OK(result)) {
1253 DEBUG(5, ("Connected anonymously\n"));
1254 goto session_setup_done;
1257 /* We can't session setup */
1263 * This should be a short term hack until
1264 * dynamic re-authentication is implemented.
1266 * See Bug 9175 - winbindd doesn't recover from
1267 * NT_STATUS_NETWORK_SESSION_EXPIRED
1269 if (smbXcli_conn_protocol((*cli)->conn) >= PROTOCOL_SMB2_02) {
1270 smbXcli_session_set_disconnect_expired((*cli)->smb2.session);
1273 result = cli_tree_connect(*cli, "IPC$", "IPC", "", 0);
1275 if (!NT_STATUS_IS_OK(result)) {
1276 DEBUG(1,("failed tcon_X with %s\n", nt_errstr(result)));
1280 /* cache the server name for later connections */
1282 saf_store(domain->name, controller);
1283 if (domain->alt_name && (*cli)->use_kerberos) {
1284 saf_store(domain->alt_name, controller);
1287 winbindd_set_locator_kdc_envs(domain);
1292 result = NT_STATUS_OK;
1297 if (!NT_STATUS_IS_OK(result)) {
1298 winbind_add_failed_connection_entry(domain, controller, result);
1299 if ((*cli) != NULL) {
1308 /*******************************************************************
1309 Add a dcname and sockaddr_storage pair to the end of a dc_name_ip
1312 Keeps the list unique by not adding duplicate entries.
1314 @param[in] mem_ctx talloc memory context to allocate from
1315 @param[in] domain_name domain of the DC
1316 @param[in] dcname name of the DC to add to the list
1317 @param[in] pss Internet address and port pair to add to the list
1318 @param[in,out] dcs array of dc_name_ip structures to add to
1319 @param[in,out] num_dcs number of dcs returned in the dcs array
1320 @return true if the list was added to, false otherwise
1321 *******************************************************************/
1323 static bool add_one_dc_unique(TALLOC_CTX *mem_ctx, const char *domain_name,
1324 const char *dcname, struct sockaddr_storage *pss,
1325 struct dc_name_ip **dcs, int *num)
1329 if (!NT_STATUS_IS_OK(check_negative_conn_cache(domain_name, dcname))) {
1330 DEBUG(10, ("DC %s was in the negative conn cache\n", dcname));
1334 /* Make sure there's no duplicates in the list */
1335 for (i=0; i<*num; i++)
1337 (struct sockaddr *)(void *)&(*dcs)[i].ss,
1338 (struct sockaddr *)(void *)pss))
1341 *dcs = talloc_realloc(mem_ctx, *dcs, struct dc_name_ip, (*num)+1);
1346 fstrcpy((*dcs)[*num].name, dcname);
1347 (*dcs)[*num].ss = *pss;
1352 static bool add_sockaddr_to_array(TALLOC_CTX *mem_ctx,
1353 struct sockaddr_storage *pss, uint16 port,
1354 struct sockaddr_storage **addrs, int *num)
1356 *addrs = talloc_realloc(mem_ctx, *addrs, struct sockaddr_storage, (*num)+1);
1358 if (*addrs == NULL) {
1363 (*addrs)[*num] = *pss;
1364 set_sockaddr_port((struct sockaddr *)&(*addrs)[*num], port);
1370 /*******************************************************************
1371 convert an ip to a name
1372 *******************************************************************/
1374 static bool dcip_to_name(TALLOC_CTX *mem_ctx,
1375 const struct winbindd_domain *domain,
1376 struct sockaddr_storage *pss,
1379 struct ip_service ip_list;
1380 uint32_t nt_version = NETLOGON_NT_VERSION_1;
1382 const char *dc_name;
1389 /* For active directory servers, try to get the ldap server name.
1390 None of these failures should be considered critical for now */
1392 if ((lp_security() == SEC_ADS) && (domain->alt_name != NULL)) {
1394 ADS_STATUS ads_status;
1395 char addr[INET6_ADDRSTRLEN];
1397 print_sockaddr(addr, sizeof(addr), pss);
1399 ads = ads_init(domain->alt_name, domain->name, addr);
1400 ads->auth.flags |= ADS_AUTH_NO_BIND;
1402 ads_status = ads_connect(ads);
1403 if (ADS_ERR_OK(ads_status)) {
1404 /* We got a cldap packet. */
1405 *name = talloc_strdup(mem_ctx,
1406 ads->config.ldap_server_name);
1407 if (*name == NULL) {
1410 namecache_store(*name, 0x20, 1, &ip_list);
1412 DEBUG(10,("dcip_to_name: flags = 0x%x\n", (unsigned int)ads->config.flags));
1414 if (domain->primary && (ads->config.flags & NBT_SERVER_KDC)) {
1415 if (ads_closest_dc(ads)) {
1416 char *sitename = sitename_fetch(mem_ctx, ads->config.realm);
1418 /* We're going to use this KDC for this realm/domain.
1419 If we are using sites, then force the krb5 libs
1422 create_local_private_krb5_conf_for_domain(domain->alt_name,
1427 TALLOC_FREE(sitename);
1429 /* use an off site KDC */
1430 create_local_private_krb5_conf_for_domain(domain->alt_name,
1435 winbindd_set_locator_kdc_envs(domain);
1437 /* Ensure we contact this DC also. */
1438 saf_store(domain->name, *name);
1439 saf_store(domain->alt_name, *name);
1442 ads_destroy( &ads );
1446 ads_destroy( &ads );
1451 status = nbt_getdc(winbind_messaging_context(), 10, pss, domain->name,
1452 &domain->sid, nt_version, mem_ctx, &nt_version,
1454 if (NT_STATUS_IS_OK(status)) {
1455 *name = talloc_strdup(mem_ctx, dc_name);
1456 if (*name == NULL) {
1459 namecache_store(*name, 0x20, 1, &ip_list);
1463 /* try node status request */
1465 if (name_status_find(domain->name, 0x1c, 0x20, pss, nbtname) ) {
1466 namecache_store(nbtname, 0x20, 1, &ip_list);
1469 *name = talloc_strdup(mem_ctx, nbtname);
1470 if (*name == NULL) {
1480 /*******************************************************************
1481 Retrieve a list of IP addresses for domain controllers.
1483 The array is sorted in the preferred connection order.
1485 @param[in] mem_ctx talloc memory context to allocate from
1486 @param[in] domain domain to retrieve DCs for
1487 @param[out] dcs array of dcs that will be returned
1488 @param[out] num_dcs number of dcs returned in the dcs array
1490 *******************************************************************/
1492 static bool get_dcs(TALLOC_CTX *mem_ctx, struct winbindd_domain *domain,
1493 struct dc_name_ip **dcs, int *num_dcs)
1496 struct sockaddr_storage ss;
1497 struct ip_service *ip_list = NULL;
1498 int iplist_size = 0;
1501 enum security_types sec = (enum security_types)lp_security();
1503 is_our_domain = strequal(domain->name, lp_workgroup());
1505 /* If not our domain, get the preferred DC, by asking our primary DC */
1507 && get_dc_name_via_netlogon(domain, dcname, &ss)
1508 && add_one_dc_unique(mem_ctx, domain->name, dcname, &ss, dcs,
1511 char addr[INET6_ADDRSTRLEN];
1512 print_sockaddr(addr, sizeof(addr), &ss);
1513 DEBUG(10, ("Retrieved DC %s at %s via netlogon\n",
1518 if ((sec == SEC_ADS) && (domain->alt_name != NULL)) {
1519 char *sitename = NULL;
1521 /* We need to make sure we know the local site before
1522 doing any DNS queries, as this will restrict the
1523 get_sorted_dc_list() call below to only fetching
1524 DNS records for the correct site. */
1526 /* Find any DC to get the site record.
1527 We deliberately don't care about the
1530 get_dc_name(domain->name, domain->alt_name, dcname, &ss);
1532 sitename = sitename_fetch(mem_ctx, domain->alt_name);
1535 /* Do the site-specific AD dns lookup first. */
1536 get_sorted_dc_list(domain->alt_name, sitename, &ip_list,
1537 &iplist_size, True);
1539 /* Add ips to the DC array. We don't look up the name
1540 of the DC in this function, but we fill in the char*
1541 of the ip now to make the failed connection cache
1543 for ( i=0; i<iplist_size; i++ ) {
1544 char addr[INET6_ADDRSTRLEN];
1545 print_sockaddr(addr, sizeof(addr),
1547 add_one_dc_unique(mem_ctx,
1556 TALLOC_FREE(sitename);
1560 /* Now we add DCs from the main AD DNS lookup. */
1561 get_sorted_dc_list(domain->alt_name, NULL, &ip_list,
1562 &iplist_size, True);
1564 for ( i=0; i<iplist_size; i++ ) {
1565 char addr[INET6_ADDRSTRLEN];
1566 print_sockaddr(addr, sizeof(addr),
1568 add_one_dc_unique(mem_ctx,
1580 /* Try standard netbios queries if no ADS and fall back to DNS queries
1581 * if alt_name is available */
1582 if (*num_dcs == 0) {
1583 get_sorted_dc_list(domain->name, NULL, &ip_list, &iplist_size,
1585 if (iplist_size == 0) {
1586 if (domain->alt_name != NULL) {
1587 get_sorted_dc_list(domain->alt_name, NULL, &ip_list,
1588 &iplist_size, true);
1592 for ( i=0; i<iplist_size; i++ ) {
1593 char addr[INET6_ADDRSTRLEN];
1594 print_sockaddr(addr, sizeof(addr),
1596 add_one_dc_unique(mem_ctx,
1611 /*******************************************************************
1612 Find and make a connection to a DC in the given domain.
1614 @param[in] mem_ctx talloc memory context to allocate from
1615 @param[in] domain domain to find a dc in
1616 @param[out] dcname NetBIOS or FQDN of DC that's connected to
1617 @param[out] pss DC Internet address and port
1618 @param[out] fd fd of the open socket connected to the newly found dc
1619 @return true when a DC connection is made, false otherwise
1620 *******************************************************************/
1622 static bool find_new_dc(TALLOC_CTX *mem_ctx,
1623 struct winbindd_domain *domain,
1624 char **dcname, struct sockaddr_storage *pss, int *fd)
1626 struct dc_name_ip *dcs = NULL;
1629 const char **dcnames = NULL;
1630 size_t num_dcnames = 0;
1632 struct sockaddr_storage *addrs = NULL;
1643 if (!get_dcs(mem_ctx, domain, &dcs, &num_dcs) || (num_dcs == 0))
1646 for (i=0; i<num_dcs; i++) {
1648 if (!add_string_to_array(mem_ctx, dcs[i].name,
1649 &dcnames, &num_dcnames)) {
1652 if (!add_sockaddr_to_array(mem_ctx, &dcs[i].ss, TCP_SMB_PORT,
1653 &addrs, &num_addrs)) {
1658 if ((num_dcnames == 0) || (num_dcnames != num_addrs))
1661 if ((addrs == NULL) || (dcnames == NULL))
1664 status = smbsock_any_connect(addrs, dcnames, NULL, NULL, NULL,
1665 num_addrs, 0, 10, fd, &fd_index, NULL);
1666 if (!NT_STATUS_IS_OK(status)) {
1667 for (i=0; i<num_dcs; i++) {
1668 char ab[INET6_ADDRSTRLEN];
1669 print_sockaddr(ab, sizeof(ab), &dcs[i].ss);
1670 DEBUG(10, ("find_new_dc: smbsock_any_connect failed for "
1671 "domain %s address %s. Error was %s\n",
1672 domain->name, ab, nt_errstr(status) ));
1673 winbind_add_failed_connection_entry(domain,
1674 dcs[i].name, NT_STATUS_UNSUCCESSFUL);
1679 *pss = addrs[fd_index];
1681 if (*dcnames[fd_index] != '\0' && !is_ipaddress(dcnames[fd_index])) {
1682 /* Ok, we've got a name for the DC */
1683 *dcname = talloc_strdup(mem_ctx, dcnames[fd_index]);
1684 if (*dcname == NULL) {
1690 /* Try to figure out the name */
1691 if (dcip_to_name(mem_ctx, domain, pss, dcname)) {
1695 /* We can not continue without the DC's name */
1696 winbind_add_failed_connection_entry(domain, dcs[fd_index].name,
1697 NT_STATUS_UNSUCCESSFUL);
1699 /* Throw away all arrays as we're doing this again. */
1703 TALLOC_FREE(dcnames);
1715 static char *current_dc_key(TALLOC_CTX *mem_ctx, const char *domain_name)
1717 return talloc_asprintf_strupper_m(mem_ctx, "CURRENT_DCNAME/%s",
1721 static void store_current_dc_in_gencache(const char *domain_name,
1722 const char *dc_name,
1723 struct cli_state *cli)
1725 char addr[INET6_ADDRSTRLEN];
1729 if (!cli_state_is_connected(cli)) {
1733 print_sockaddr(addr, sizeof(addr),
1734 smbXcli_conn_remote_sockaddr(cli->conn));
1736 key = current_dc_key(talloc_tos(), domain_name);
1741 value = talloc_asprintf(talloc_tos(), "%s %s", addr, dc_name);
1742 if (value == NULL) {
1746 gencache_set(key, value, 0x7fffffff);
1752 bool fetch_current_dc_from_gencache(TALLOC_CTX *mem_ctx,
1753 const char *domain_name,
1754 char **p_dc_name, char **p_dc_ip)
1759 char *dc_name = NULL;
1762 key = current_dc_key(talloc_tos(), domain_name);
1766 if (!gencache_get(key, mem_ctx, &value, NULL)) {
1769 p = strchr(value, ' ');
1773 dc_ip = talloc_strndup(mem_ctx, value, p - value);
1774 if (dc_ip == NULL) {
1777 dc_name = talloc_strdup(mem_ctx, p+1);
1778 if (dc_name == NULL) {
1782 if (p_dc_ip != NULL) {
1786 if (p_dc_name != NULL) {
1787 *p_dc_name = dc_name;
1792 TALLOC_FREE(dc_name);
1799 NTSTATUS wb_open_internal_pipe(TALLOC_CTX *mem_ctx,
1800 const struct ndr_interface_table *table,
1801 struct rpc_pipe_client **ret_pipe)
1803 struct rpc_pipe_client *cli = NULL;
1804 const struct auth_session_info *session_info;
1805 NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
1808 session_info = get_session_info_system();
1809 SMB_ASSERT(session_info != NULL);
1811 /* create a connection to the specified pipe */
1812 if (lp_parm_bool(-1, "winbindd", "use external pipes", false)) {
1813 status = rpc_pipe_open_interface(mem_ctx,
1817 winbind_messaging_context(),
1820 status = rpc_pipe_open_internal(mem_ctx,
1824 winbind_messaging_context(),
1827 if (!NT_STATUS_IS_OK(status)) {
1828 DEBUG(0, ("open_internal_pipe: Could not connect to %s pipe: %s\n",
1829 table->name, nt_errstr(status)));
1837 return NT_STATUS_OK;
1840 static NTSTATUS cm_open_connection(struct winbindd_domain *domain,
1841 struct winbindd_cm_conn *new_conn)
1843 TALLOC_CTX *mem_ctx;
1845 char *saf_servername;
1848 if ((mem_ctx = talloc_init("cm_open_connection")) == NULL) {
1849 set_domain_offline(domain);
1850 return NT_STATUS_NO_MEMORY;
1853 saf_servername = saf_fetch(mem_ctx, domain->name );
1855 /* we have to check the server affinity cache here since
1856 later we select a DC based on response time and not preference */
1858 /* Check the negative connection cache
1859 before talking to it. It going down may have
1860 triggered the reconnection. */
1862 if ( saf_servername && NT_STATUS_IS_OK(check_negative_conn_cache( domain->name, saf_servername))) {
1864 DEBUG(10,("cm_open_connection: saf_servername is '%s' for domain %s\n",
1865 saf_servername, domain->name ));
1867 /* convert an ip address to a name */
1868 if (is_ipaddress( saf_servername ) ) {
1869 char *dcname = NULL;
1870 struct sockaddr_storage ss;
1872 if (!interpret_string_addr(&ss, saf_servername,
1874 TALLOC_FREE(mem_ctx);
1875 return NT_STATUS_UNSUCCESSFUL;
1877 if (dcip_to_name(mem_ctx, domain, &ss, &dcname)) {
1878 domain->dcname = talloc_strdup(domain,
1880 if (domain->dcname == NULL) {
1881 TALLOC_FREE(mem_ctx);
1882 return NT_STATUS_NO_MEMORY;
1885 winbind_add_failed_connection_entry(
1886 domain, saf_servername,
1887 NT_STATUS_UNSUCCESSFUL);
1890 domain->dcname = talloc_strdup(domain, saf_servername);
1891 if (domain->dcname == NULL) {
1892 TALLOC_FREE(mem_ctx);
1893 return NT_STATUS_NO_MEMORY;
1898 for (retries = 0; retries < 3; retries++) {
1901 char *dcname = NULL;
1903 result = NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND;
1905 DEBUG(10,("cm_open_connection: dcname is '%s' for domain %s\n",
1906 domain->dcname ? domain->dcname : "", domain->name ));
1908 if (domain->dcname != NULL
1909 && NT_STATUS_IS_OK(check_negative_conn_cache( domain->name, domain->dcname))
1910 && (resolve_name(domain->dcname, &domain->dcaddr, 0x20, true)))
1914 status = smbsock_connect(&domain->dcaddr, 0,
1917 if (!NT_STATUS_IS_OK(status)) {
1923 !find_new_dc(mem_ctx, domain, &dcname, &domain->dcaddr, &fd))
1925 /* This is the one place where we will
1926 set the global winbindd offline state
1927 to true, if a "WINBINDD_OFFLINE" entry
1928 is found in the winbindd cache. */
1929 set_global_winbindd_state_offline();
1932 if (dcname != NULL) {
1933 talloc_free(domain->dcname);
1935 domain->dcname = talloc_move(domain, &dcname);
1936 if (domain->dcname == NULL) {
1937 result = NT_STATUS_NO_MEMORY;
1942 new_conn->cli = NULL;
1944 result = cm_prepare_connection(domain, fd, domain->dcname,
1945 &new_conn->cli, &retry);
1946 if (!NT_STATUS_IS_OK(result)) {
1947 /* Don't leak the smb connection socket */
1955 if (NT_STATUS_IS_OK(result)) {
1956 bool seal_pipes = true;
1958 winbindd_set_locator_kdc_envs(domain);
1960 if (domain->online == False) {
1961 /* We're changing state from offline to online. */
1962 set_global_winbindd_state_online();
1964 set_domain_online(domain);
1967 * Much as I hate global state, this seems to be the point
1968 * where we can be certain that we have a proper connection to
1969 * a DC. wbinfo --dc-info needs that information, store it in
1970 * gencache with a looong timeout. This will need revisiting
1971 * once we start to connect to multiple DCs, wbcDcInfo is
1972 * already prepared for that.
1974 store_current_dc_in_gencache(domain->name, domain->dcname,
1977 seal_pipes = lp_winbind_sealed_pipes();
1978 seal_pipes = lp_parm_bool(-1, "winbind sealed pipes",
1983 new_conn->auth_level = DCERPC_AUTH_LEVEL_PRIVACY;
1985 new_conn->auth_level = DCERPC_AUTH_LEVEL_INTEGRITY;
1988 /* Ensure we setup the retry handler. */
1989 set_domain_offline(domain);
1992 talloc_destroy(mem_ctx);
1996 /* Close down all open pipes on a connection. */
1998 void invalidate_cm_connection(struct winbindd_domain *domain)
2001 struct winbindd_cm_conn *conn = &domain->conn;
2003 /* We're closing down a possibly dead
2004 connection. Don't have impossibly long (10s) timeouts. */
2007 cli_set_timeout(conn->cli, 1000); /* 1 second. */
2010 if (conn->samr_pipe != NULL) {
2011 if (is_valid_policy_hnd(&conn->sam_connect_handle)) {
2012 dcerpc_samr_Close(conn->samr_pipe->binding_handle,
2014 &conn->sam_connect_handle,
2017 TALLOC_FREE(conn->samr_pipe);
2018 /* Ok, it must be dead. Drop timeout to 0.5 sec. */
2020 cli_set_timeout(conn->cli, 500);
2024 if (conn->lsa_pipe != NULL) {
2025 if (is_valid_policy_hnd(&conn->lsa_policy)) {
2026 dcerpc_lsa_Close(conn->lsa_pipe->binding_handle,
2031 TALLOC_FREE(conn->lsa_pipe);
2032 /* Ok, it must be dead. Drop timeout to 0.5 sec. */
2034 cli_set_timeout(conn->cli, 500);
2038 if (conn->lsa_pipe_tcp != NULL) {
2039 if (is_valid_policy_hnd(&conn->lsa_policy)) {
2040 dcerpc_lsa_Close(conn->lsa_pipe_tcp->binding_handle,
2045 TALLOC_FREE(conn->lsa_pipe_tcp);
2046 /* Ok, it must be dead. Drop timeout to 0.5 sec. */
2048 cli_set_timeout(conn->cli, 500);
2052 if (conn->netlogon_pipe != NULL) {
2053 TALLOC_FREE(conn->netlogon_pipe);
2054 /* Ok, it must be dead. Drop timeout to 0.5 sec. */
2056 cli_set_timeout(conn->cli, 500);
2060 conn->auth_level = DCERPC_AUTH_LEVEL_PRIVACY;
2061 conn->netlogon_force_reauth = false;
2062 conn->netlogon_flags = 0;
2063 TALLOC_FREE(conn->netlogon_creds);
2066 cli_shutdown(conn->cli);
2072 void close_conns_after_fork(void)
2074 struct winbindd_domain *domain;
2075 struct winbindd_cli_state *cli_state;
2077 for (domain = domain_list(); domain; domain = domain->next) {
2079 * first close the low level SMB TCP connection
2080 * so that we don't generate any SMBclose
2081 * requests in invalidate_cm_connection()
2083 if (cli_state_is_connected(domain->conn.cli)) {
2084 smbXcli_conn_disconnect(domain->conn.cli->conn, NT_STATUS_OK);
2087 invalidate_cm_connection(domain);
2090 for (cli_state = winbindd_client_list();
2092 cli_state = cli_state->next) {
2093 if (cli_state->sock >= 0) {
2094 close(cli_state->sock);
2095 cli_state->sock = -1;
2100 static bool connection_ok(struct winbindd_domain *domain)
2104 ok = cli_state_is_connected(domain->conn.cli);
2106 DEBUG(3, ("connection_ok: Connection to %s for domain %s is not connected\n",
2107 domain->dcname, domain->name));
2111 if (domain->online == False) {
2112 DEBUG(3, ("connection_ok: Domain %s is offline\n", domain->name));
2119 /* Initialize a new connection up to the RPC BIND.
2120 Bypass online status check so always does network calls. */
2122 static NTSTATUS init_dc_connection_network(struct winbindd_domain *domain, bool need_rw_dc)
2125 bool skip_connection = domain->internal;
2126 if (need_rw_dc && domain->rodc) {
2127 skip_connection = false;
2130 /* Internal connections never use the network. */
2131 if (dom_sid_equal(&domain->sid, &global_sid_Builtin)) {
2132 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
2135 /* Still ask the internal LSA and SAMR server about the local domain */
2136 if (skip_connection || connection_ok(domain)) {
2137 if (!domain->initialized) {
2138 set_dc_type_and_flags(domain);
2140 return NT_STATUS_OK;
2143 invalidate_cm_connection(domain);
2145 if (!domain->primary && !domain->initialized) {
2147 * Before we connect to a trust, work out if it is an
2148 * AD domain by asking our own domain.
2150 set_dc_type_and_flags_trustinfo(domain);
2153 result = cm_open_connection(domain, &domain->conn);
2155 if (NT_STATUS_IS_OK(result) && !domain->initialized) {
2156 set_dc_type_and_flags(domain);
2162 NTSTATUS init_dc_connection(struct winbindd_domain *domain, bool need_rw_dc)
2164 if (dom_sid_equal(&domain->sid, &global_sid_Builtin)) {
2165 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
2168 if (domain->initialized && !domain->online) {
2169 /* We check for online status elsewhere. */
2170 return NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND;
2173 return init_dc_connection_network(domain, need_rw_dc);
2176 static NTSTATUS init_dc_connection_rpc(struct winbindd_domain *domain, bool need_rw_dc)
2180 status = init_dc_connection(domain, need_rw_dc);
2181 if (!NT_STATUS_IS_OK(status)) {
2185 if (!domain->internal && domain->conn.cli == NULL) {
2186 /* happens for trusted domains without inbound trust */
2187 return NT_STATUS_TRUSTED_DOMAIN_FAILURE;
2190 return NT_STATUS_OK;
2193 /******************************************************************************
2194 Set the trust flags (direction and forest location) for a domain
2195 ******************************************************************************/
2197 static bool set_dc_type_and_flags_trustinfo( struct winbindd_domain *domain )
2199 struct winbindd_domain *our_domain;
2200 NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
2202 struct netr_DomainTrustList trusts;
2204 uint32 flags = (NETR_TRUST_FLAG_IN_FOREST |
2205 NETR_TRUST_FLAG_OUTBOUND |
2206 NETR_TRUST_FLAG_INBOUND);
2207 struct rpc_pipe_client *cli;
2208 TALLOC_CTX *mem_ctx = NULL;
2209 struct dcerpc_binding_handle *b;
2211 DEBUG(5, ("set_dc_type_and_flags_trustinfo: domain %s\n", domain->name ));
2213 /* Our primary domain doesn't need to worry about trust flags.
2214 Force it to go through the network setup */
2215 if ( domain->primary ) {
2219 mem_ctx = talloc_stackframe();
2220 our_domain = find_our_domain();
2221 if (our_domain->internal) {
2222 result = init_dc_connection(our_domain, false);
2223 if (!NT_STATUS_IS_OK(result)) {
2224 DEBUG(3,("set_dc_type_and_flags_trustinfo: "
2225 "Not able to make a connection to our domain: %s\n",
2226 nt_errstr(result)));
2227 TALLOC_FREE(mem_ctx);
2232 /* This won't work unless our domain is AD */
2233 if ( !our_domain->active_directory ) {
2234 TALLOC_FREE(mem_ctx);
2238 if (our_domain->internal) {
2239 result = wb_open_internal_pipe(mem_ctx, &ndr_table_netlogon, &cli);
2240 } else if (!connection_ok(our_domain)) {
2241 DEBUG(3,("set_dc_type_and_flags_trustinfo: "
2242 "No connection to our domain!\n"));
2243 TALLOC_FREE(mem_ctx);
2246 result = cm_connect_netlogon(our_domain, &cli);
2249 if (!NT_STATUS_IS_OK(result)) {
2250 DEBUG(5, ("set_dc_type_and_flags_trustinfo: Could not open "
2251 "a connection to %s for PIPE_NETLOGON (%s)\n",
2252 domain->name, nt_errstr(result)));
2253 TALLOC_FREE(mem_ctx);
2256 b = cli->binding_handle;
2258 /* Use DsEnumerateDomainTrusts to get us the trust direction and type. */
2259 result = dcerpc_netr_DsrEnumerateDomainTrusts(b, mem_ctx,
2264 if (!NT_STATUS_IS_OK(result)) {
2265 DEBUG(0,("set_dc_type_and_flags_trustinfo: "
2266 "failed to query trusted domain list: %s\n",
2267 nt_errstr(result)));
2268 TALLOC_FREE(mem_ctx);
2271 if (!W_ERROR_IS_OK(werr)) {
2272 DEBUG(0,("set_dc_type_and_flags_trustinfo: "
2273 "failed to query trusted domain list: %s\n",
2275 TALLOC_FREE(mem_ctx);
2279 /* Now find the domain name and get the flags */
2281 for ( i=0; i<trusts.count; i++ ) {
2282 if ( strequal( domain->name, trusts.array[i].netbios_name) ) {
2283 domain->domain_flags = trusts.array[i].trust_flags;
2284 domain->domain_type = trusts.array[i].trust_type;
2285 domain->domain_trust_attribs = trusts.array[i].trust_attributes;
2287 if ( domain->domain_type == LSA_TRUST_TYPE_UPLEVEL )
2288 domain->active_directory = True;
2290 /* This flag is only set if the domain is *our*
2291 primary domain and the primary domain is in
2294 domain->native_mode = (domain->domain_flags & NETR_TRUST_FLAG_NATIVE);
2296 DEBUG(5, ("set_dc_type_and_flags_trustinfo: domain %s is %sin "
2297 "native mode.\n", domain->name,
2298 domain->native_mode ? "" : "NOT "));
2300 DEBUG(5,("set_dc_type_and_flags_trustinfo: domain %s is %s"
2301 "running active directory.\n", domain->name,
2302 domain->active_directory ? "" : "NOT "));
2304 domain->can_do_ncacn_ip_tcp = domain->active_directory;
2306 domain->initialized = True;
2312 TALLOC_FREE(mem_ctx);
2314 return domain->initialized;
2317 /******************************************************************************
2318 We can 'sense' certain things about the DC by it's replies to certain
2321 This tells us if this particular remote server is Active Directory, and if it
2323 ******************************************************************************/
2325 static void set_dc_type_and_flags_connect( struct winbindd_domain *domain )
2327 NTSTATUS status, result;
2329 TALLOC_CTX *mem_ctx = NULL;
2330 struct rpc_pipe_client *cli = NULL;
2331 struct policy_handle pol;
2332 union dssetup_DsRoleInfo info;
2333 union lsa_PolicyInformation *lsa_info = NULL;
2335 if (!domain->internal && !connection_ok(domain)) {
2339 mem_ctx = talloc_init("set_dc_type_and_flags on domain %s\n",
2342 DEBUG(1, ("set_dc_type_and_flags_connect: talloc_init() failed\n"));
2346 DEBUG(5, ("set_dc_type_and_flags_connect: domain %s\n", domain->name ));
2348 if (domain->internal) {
2349 status = wb_open_internal_pipe(mem_ctx,
2353 status = cli_rpc_pipe_open_noauth(domain->conn.cli,
2358 if (!NT_STATUS_IS_OK(status)) {
2359 DEBUG(5, ("set_dc_type_and_flags_connect: Could not bind to "
2360 "PI_DSSETUP on domain %s: (%s)\n",
2361 domain->name, nt_errstr(status)));
2363 /* if this is just a non-AD domain we need to continue
2364 * identifying so that we can in the end return with
2365 * domain->initialized = True - gd */
2370 status = dcerpc_dssetup_DsRoleGetPrimaryDomainInformation(cli->binding_handle, mem_ctx,
2371 DS_ROLE_BASIC_INFORMATION,
2376 if (NT_STATUS_IS_OK(status)) {
2377 result = werror_to_ntstatus(werr);
2379 if (!NT_STATUS_IS_OK(status)) {
2380 DEBUG(5, ("set_dc_type_and_flags_connect: rpccli_ds_getprimarydominfo "
2381 "on domain %s failed: (%s)\n",
2382 domain->name, nt_errstr(status)));
2384 /* older samba3 DCs will return DCERPC_FAULT_OP_RNG_ERROR for
2385 * every opcode on the DSSETUP pipe, continue with
2386 * no_dssetup mode here as well to get domain->initialized
2389 if (NT_STATUS_EQUAL(status, NT_STATUS_RPC_PROCNUM_OUT_OF_RANGE)) {
2393 TALLOC_FREE(mem_ctx);
2397 if ((info.basic.flags & DS_ROLE_PRIMARY_DS_RUNNING) &&
2398 !(info.basic.flags & DS_ROLE_PRIMARY_DS_MIXED_MODE)) {
2399 domain->native_mode = True;
2401 domain->native_mode = False;
2405 if (domain->internal) {
2406 status = wb_open_internal_pipe(mem_ctx,
2410 status = cli_rpc_pipe_open_noauth(domain->conn.cli,
2411 &ndr_table_lsarpc, &cli);
2413 if (!NT_STATUS_IS_OK(status)) {
2414 DEBUG(5, ("set_dc_type_and_flags_connect: Could not bind to "
2415 "PI_LSARPC on domain %s: (%s)\n",
2416 domain->name, nt_errstr(status)));
2418 TALLOC_FREE(mem_ctx);
2422 status = rpccli_lsa_open_policy2(cli, mem_ctx, True,
2423 SEC_FLAG_MAXIMUM_ALLOWED, &pol);
2425 if (NT_STATUS_IS_OK(status)) {
2426 /* This particular query is exactly what Win2k clients use
2427 to determine that the DC is active directory */
2428 status = dcerpc_lsa_QueryInfoPolicy2(cli->binding_handle, mem_ctx,
2430 LSA_POLICY_INFO_DNS,
2435 if (NT_STATUS_IS_OK(status) && NT_STATUS_IS_OK(result)) {
2436 domain->active_directory = True;
2438 if (lsa_info->dns.name.string) {
2439 if (!strequal(domain->name, lsa_info->dns.name.string))
2441 DEBUG(1, ("set_dc_type_and_flags_connect: DC "
2442 "for domain %s claimed it was a DC "
2443 "for domain %s, refusing to "
2446 lsa_info->dns.name.string));
2448 TALLOC_FREE(mem_ctx);
2451 talloc_free(domain->name);
2452 domain->name = talloc_strdup(domain,
2453 lsa_info->dns.name.string);
2454 if (domain->name == NULL) {
2459 if (lsa_info->dns.dns_domain.string) {
2460 if (domain->alt_name != NULL &&
2461 !strequal(domain->alt_name,
2462 lsa_info->dns.dns_domain.string))
2464 DEBUG(1, ("set_dc_type_and_flags_connect: DC "
2465 "for domain %s (%s) claimed it was "
2466 "a DC for domain %s, refusing to "
2468 domain->alt_name, domain->name,
2469 lsa_info->dns.dns_domain.string));
2471 TALLOC_FREE(mem_ctx);
2474 talloc_free(domain->alt_name);
2476 talloc_strdup(domain,
2477 lsa_info->dns.dns_domain.string);
2478 if (domain->alt_name == NULL) {
2483 /* See if we can set some domain trust flags about
2486 if (lsa_info->dns.dns_forest.string) {
2487 talloc_free(domain->forest_name);
2488 domain->forest_name =
2489 talloc_strdup(domain,
2490 lsa_info->dns.dns_forest.string);
2491 if (domain->forest_name == NULL) {
2495 if (strequal(domain->forest_name, domain->alt_name)) {
2496 domain->domain_flags |= NETR_TRUST_FLAG_TREEROOT;
2500 if (lsa_info->dns.sid) {
2501 if (!is_null_sid(&domain->sid) &&
2502 !dom_sid_equal(&domain->sid,
2505 DEBUG(1, ("set_dc_type_and_flags_connect: DC "
2506 "for domain %s (%s) claimed it was "
2507 "a DC for domain %s, refusing to "
2509 dom_sid_string(talloc_tos(),
2512 dom_sid_string(talloc_tos(),
2513 lsa_info->dns.sid)));
2515 TALLOC_FREE(mem_ctx);
2518 sid_copy(&domain->sid, lsa_info->dns.sid);
2521 domain->active_directory = False;
2523 status = rpccli_lsa_open_policy(cli, mem_ctx, True,
2524 SEC_FLAG_MAXIMUM_ALLOWED,
2527 if (!NT_STATUS_IS_OK(status)) {
2531 status = dcerpc_lsa_QueryInfoPolicy(cli->binding_handle, mem_ctx,
2533 LSA_POLICY_INFO_ACCOUNT_DOMAIN,
2536 if (NT_STATUS_IS_OK(status) && NT_STATUS_IS_OK(result)) {
2538 if (lsa_info->account_domain.name.string) {
2539 if (!strequal(domain->name,
2540 lsa_info->account_domain.name.string))
2543 ("set_dc_type_and_flags_connect: "
2544 "DC for domain %s claimed it was"
2545 " a DC for domain %s, refusing "
2546 "to initialize\n", domain->name,
2548 account_domain.name.string));
2550 TALLOC_FREE(mem_ctx);
2553 talloc_free(domain->name);
2555 talloc_strdup(domain,
2556 lsa_info->account_domain.name.string);
2559 if (lsa_info->account_domain.sid) {
2560 if (!is_null_sid(&domain->sid) &&
2561 !dom_sid_equal(&domain->sid,
2562 lsa_info->account_domain.sid))
2565 ("set_dc_type_and_flags_connect: "
2566 "DC for domain %s (%s) claimed "
2567 "it was a DC for domain %s, "
2568 "refusing to initialize\n",
2569 dom_sid_string(talloc_tos(),
2572 dom_sid_string(talloc_tos(),
2573 lsa_info->account_domain.sid)));
2575 TALLOC_FREE(mem_ctx);
2578 sid_copy(&domain->sid, lsa_info->account_domain.sid);
2584 DEBUG(5, ("set_dc_type_and_flags_connect: domain %s is %sin native mode.\n",
2585 domain->name, domain->native_mode ? "" : "NOT "));
2587 DEBUG(5,("set_dc_type_and_flags_connect: domain %s is %srunning active directory.\n",
2588 domain->name, domain->active_directory ? "" : "NOT "));
2590 domain->can_do_ncacn_ip_tcp = domain->active_directory;
2594 TALLOC_FREE(mem_ctx);
2596 domain->initialized = True;
2599 /**********************************************************************
2600 Set the domain_flags (trust attributes, domain operating modes, etc...
2601 ***********************************************************************/
2603 static void set_dc_type_and_flags( struct winbindd_domain *domain )
2605 /* we always have to contact our primary domain */
2607 if ( domain->primary || domain->internal) {
2608 DEBUG(10,("set_dc_type_and_flags: setting up flags for "
2609 "primary or internal domain\n"));
2610 set_dc_type_and_flags_connect( domain );
2614 /* Use our DC to get the information if possible */
2616 if ( !set_dc_type_and_flags_trustinfo( domain ) ) {
2617 /* Otherwise, fallback to contacting the
2619 set_dc_type_and_flags_connect( domain );
2627 /**********************************************************************
2628 ***********************************************************************/
2630 static NTSTATUS cm_get_schannel_creds(struct winbindd_domain *domain,
2631 struct netlogon_creds_cli_context **ppdc)
2633 NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
2634 struct rpc_pipe_client *netlogon_pipe;
2638 if ((!IS_DC) && (!domain->primary)) {
2639 return NT_STATUS_TRUSTED_DOMAIN_FAILURE;
2642 if (domain->conn.netlogon_creds != NULL) {
2643 if (!(domain->conn.netlogon_flags & NETLOGON_NEG_AUTHENTICATED_RPC)) {
2644 return NT_STATUS_TRUSTED_DOMAIN_FAILURE;
2646 *ppdc = domain->conn.netlogon_creds;
2647 return NT_STATUS_OK;
2650 result = cm_connect_netlogon(domain, &netlogon_pipe);
2651 if (!NT_STATUS_IS_OK(result)) {
2655 if (domain->conn.netlogon_creds == NULL) {
2656 return NT_STATUS_TRUSTED_DOMAIN_FAILURE;
2659 if (!(domain->conn.netlogon_flags & NETLOGON_NEG_AUTHENTICATED_RPC)) {
2660 return NT_STATUS_TRUSTED_DOMAIN_FAILURE;
2663 *ppdc = domain->conn.netlogon_creds;
2664 return NT_STATUS_OK;
2667 NTSTATUS cm_connect_sam(struct winbindd_domain *domain, TALLOC_CTX *mem_ctx,
2669 struct rpc_pipe_client **cli, struct policy_handle *sam_handle)
2671 struct winbindd_cm_conn *conn;
2672 NTSTATUS status, result;
2673 struct netlogon_creds_cli_context *p_creds;
2674 struct cli_credentials *creds = NULL;
2676 if (sid_check_is_our_sam(&domain->sid)) {
2677 if (domain->rodc == false || need_rw_dc == false) {
2678 return open_internal_samr_conn(mem_ctx, domain, cli, sam_handle);
2682 status = init_dc_connection_rpc(domain, need_rw_dc);
2683 if (!NT_STATUS_IS_OK(status)) {
2687 conn = &domain->conn;
2689 if (rpccli_is_connected(conn->samr_pipe)) {
2693 TALLOC_FREE(conn->samr_pipe);
2696 * No SAMR pipe yet. Attempt to get an NTLMSSP SPNEGO authenticated
2697 * sign and sealed pipe using the machine account password by
2698 * preference. If we can't - try schannel, if that fails, try
2702 result = get_trust_credentials(domain, talloc_tos(), false, &creds);
2703 if (!NT_STATUS_IS_OK(result)) {
2704 DEBUG(10, ("cm_connect_sam: No no user available for "
2705 "domain %s, trying schannel\n", domain->name));
2709 if (cli_credentials_is_anonymous(creds)) {
2714 * We have an authenticated connection. Use a SPNEGO
2715 * authenticated SAMR pipe with sign & seal.
2717 status = cli_rpc_pipe_open_with_creds(conn->cli,
2720 DCERPC_AUTH_TYPE_SPNEGO,
2722 smbXcli_conn_remote_name(conn->cli->conn),
2725 if (!NT_STATUS_IS_OK(status)) {
2726 DEBUG(10,("cm_connect_sam: failed to connect to SAMR "
2727 "pipe for domain %s using NTLMSSP "
2728 "authenticated pipe: user %s. Error was "
2729 "%s\n", domain->name,
2730 cli_credentials_get_unparsed_name(creds, talloc_tos()),
2731 nt_errstr(status)));
2735 DEBUG(10,("cm_connect_sam: connected to SAMR pipe for "
2736 "domain %s using NTLMSSP authenticated "
2737 "pipe: user %s\n", domain->name,
2738 cli_credentials_get_unparsed_name(creds, talloc_tos())));
2740 status = dcerpc_samr_Connect2(conn->samr_pipe->binding_handle, mem_ctx,
2741 conn->samr_pipe->desthost,
2742 SEC_FLAG_MAXIMUM_ALLOWED,
2743 &conn->sam_connect_handle,
2745 if (NT_STATUS_IS_OK(status) && NT_STATUS_IS_OK(result)) {
2748 if (NT_STATUS_IS_OK(status)) {
2752 DEBUG(10,("cm_connect_sam: ntlmssp-sealed dcerpc_samr_Connect2 "
2753 "failed for domain %s, error was %s. Trying schannel\n",
2754 domain->name, nt_errstr(status) ));
2755 TALLOC_FREE(conn->samr_pipe);
2759 /* Fall back to schannel if it's a W2K pre-SP1 box. */
2761 status = cm_get_schannel_creds(domain, &p_creds);
2762 if (!NT_STATUS_IS_OK(status)) {
2763 /* If this call fails - conn->cli can now be NULL ! */
2764 DEBUG(10, ("cm_connect_sam: Could not get schannel auth info "
2765 "for domain %s (error %s), trying anon\n",
2767 nt_errstr(status) ));
2770 status = cli_rpc_pipe_open_schannel_with_key
2771 (conn->cli, &ndr_table_samr, NCACN_NP,
2772 domain->name, p_creds, &conn->samr_pipe);
2774 if (!NT_STATUS_IS_OK(status)) {
2775 DEBUG(10,("cm_connect_sam: failed to connect to SAMR pipe for "
2776 "domain %s using schannel. Error was %s\n",
2777 domain->name, nt_errstr(status) ));
2780 DEBUG(10,("cm_connect_sam: connected to SAMR pipe for domain %s using "
2781 "schannel.\n", domain->name ));
2783 status = dcerpc_samr_Connect2(conn->samr_pipe->binding_handle, mem_ctx,
2784 conn->samr_pipe->desthost,
2785 SEC_FLAG_MAXIMUM_ALLOWED,
2786 &conn->sam_connect_handle,
2788 if (NT_STATUS_IS_OK(status) && NT_STATUS_IS_OK(result)) {
2791 if (NT_STATUS_IS_OK(status)) {
2794 DEBUG(10,("cm_connect_sam: schannel-sealed dcerpc_samr_Connect2 failed "
2795 "for domain %s, error was %s. Trying anonymous\n",
2796 domain->name, nt_errstr(status) ));
2797 TALLOC_FREE(conn->samr_pipe);
2801 /* Finally fall back to anonymous. */
2802 if (lp_winbind_sealed_pipes() || lp_require_strong_key()) {
2803 status = NT_STATUS_DOWNGRADE_DETECTED;
2804 DEBUG(1, ("Unwilling to make SAMR connection to domain %s"
2805 "without connection level security, "
2806 "must set 'winbind sealed pipes = false' and "
2807 "'require strong key = false' to proceed: %s\n",
2808 domain->name, nt_errstr(status)));
2811 status = cli_rpc_pipe_open_noauth(conn->cli, &ndr_table_samr,
2814 if (!NT_STATUS_IS_OK(status)) {
2818 status = dcerpc_samr_Connect2(conn->samr_pipe->binding_handle, mem_ctx,
2819 conn->samr_pipe->desthost,
2820 SEC_FLAG_MAXIMUM_ALLOWED,
2821 &conn->sam_connect_handle,
2823 if (!NT_STATUS_IS_OK(status)) {
2824 DEBUG(10,("cm_connect_sam: rpccli_samr_Connect2 failed "
2825 "for domain %s Error was %s\n",
2826 domain->name, nt_errstr(status) ));
2829 if (!NT_STATUS_IS_OK(result)) {
2831 DEBUG(10,("cm_connect_sam: dcerpc_samr_Connect2 failed "
2832 "for domain %s Error was %s\n",
2833 domain->name, nt_errstr(result)));
2838 status = dcerpc_samr_OpenDomain(conn->samr_pipe->binding_handle,
2840 &conn->sam_connect_handle,
2841 SEC_FLAG_MAXIMUM_ALLOWED,
2843 &conn->sam_domain_handle,
2845 if (!NT_STATUS_IS_OK(status)) {
2852 if (NT_STATUS_EQUAL(status, NT_STATUS_ACCESS_DENIED)) {
2854 * if we got access denied, we might just have no access rights
2855 * to talk to the remote samr server server (e.g. when we are a
2856 * PDC and we are connecting a w2k8 pdc via an interdomain
2857 * trust). In that case do not invalidate the whole connection
2860 TALLOC_FREE(conn->samr_pipe);
2861 ZERO_STRUCT(conn->sam_domain_handle);
2863 } else if (!NT_STATUS_IS_OK(status)) {
2864 invalidate_cm_connection(domain);
2868 *cli = conn->samr_pipe;
2869 *sam_handle = conn->sam_domain_handle;
2873 /**********************************************************************
2874 open an schanneld ncacn_ip_tcp connection to LSA
2875 ***********************************************************************/
2877 static NTSTATUS cm_connect_lsa_tcp(struct winbindd_domain *domain,
2878 TALLOC_CTX *mem_ctx,
2879 struct rpc_pipe_client **cli)
2881 struct winbindd_cm_conn *conn;
2882 struct netlogon_creds_cli_context *creds;
2885 DEBUG(10,("cm_connect_lsa_tcp\n"));
2887 status = init_dc_connection_rpc(domain, false);
2888 if (!NT_STATUS_IS_OK(status)) {
2892 conn = &domain->conn;
2894 if (conn->lsa_pipe_tcp &&
2895 conn->lsa_pipe_tcp->transport->transport == NCACN_IP_TCP &&
2896 conn->lsa_pipe_tcp->auth->auth_level >= DCERPC_AUTH_LEVEL_INTEGRITY &&
2897 rpccli_is_connected(conn->lsa_pipe_tcp)) {
2901 TALLOC_FREE(conn->lsa_pipe_tcp);
2903 status = cm_get_schannel_creds(domain, &creds);
2904 if (!NT_STATUS_IS_OK(status)) {
2908 status = cli_rpc_pipe_open_schannel_with_key(conn->cli,
2913 &conn->lsa_pipe_tcp);
2914 if (!NT_STATUS_IS_OK(status)) {
2915 DEBUG(10,("cli_rpc_pipe_open_schannel_with_key failed: %s\n",
2916 nt_errstr(status)));
2921 if (!NT_STATUS_IS_OK(status)) {
2922 TALLOC_FREE(conn->lsa_pipe_tcp);
2926 *cli = conn->lsa_pipe_tcp;
2931 NTSTATUS cm_connect_lsa(struct winbindd_domain *domain, TALLOC_CTX *mem_ctx,
2932 struct rpc_pipe_client **cli, struct policy_handle *lsa_policy)
2934 struct winbindd_cm_conn *conn;
2935 NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
2936 struct netlogon_creds_cli_context *p_creds;
2937 struct cli_credentials *creds = NULL;
2939 result = init_dc_connection_rpc(domain, false);
2940 if (!NT_STATUS_IS_OK(result))
2943 conn = &domain->conn;
2945 if (rpccli_is_connected(conn->lsa_pipe)) {
2949 TALLOC_FREE(conn->lsa_pipe);
2951 result = get_trust_credentials(domain, talloc_tos(), false, &creds);
2952 if (!NT_STATUS_IS_OK(result)) {
2953 DEBUG(10, ("cm_connect_sam: No no user available for "
2954 "domain %s, trying schannel\n", domain->name));
2958 if (cli_credentials_is_anonymous(creds)) {
2963 * We have an authenticated connection. Use a SPNEGO
2964 * authenticated LSA pipe with sign & seal.
2966 result = cli_rpc_pipe_open_with_creds
2967 (conn->cli, &ndr_table_lsarpc, NCACN_NP,
2968 DCERPC_AUTH_TYPE_SPNEGO,
2970 smbXcli_conn_remote_name(conn->cli->conn),
2973 if (!NT_STATUS_IS_OK(result)) {
2974 DEBUG(10,("cm_connect_lsa: failed to connect to LSA pipe for "
2975 "domain %s using NTLMSSP authenticated pipe: user "
2976 "%s. Error was %s. Trying schannel.\n",
2978 cli_credentials_get_unparsed_name(creds, talloc_tos()),
2979 nt_errstr(result)));
2983 DEBUG(10,("cm_connect_lsa: connected to LSA pipe for domain %s using "
2984 "NTLMSSP authenticated pipe: user %s\n",
2985 domain->name, cli_credentials_get_unparsed_name(creds, talloc_tos())));
2987 result = rpccli_lsa_open_policy(conn->lsa_pipe, mem_ctx, True,
2988 SEC_FLAG_MAXIMUM_ALLOWED,
2990 if (NT_STATUS_IS_OK(result)) {
2994 DEBUG(10,("cm_connect_lsa: rpccli_lsa_open_policy failed, trying "
2997 TALLOC_FREE(conn->lsa_pipe);
3001 /* Fall back to schannel if it's a W2K pre-SP1 box. */
3003 result = cm_get_schannel_creds(domain, &p_creds);
3004 if (!NT_STATUS_IS_OK(result)) {
3005 /* If this call fails - conn->cli can now be NULL ! */
3006 DEBUG(10, ("cm_connect_lsa: Could not get schannel auth info "
3007 "for domain %s (error %s), trying anon\n",
3009 nt_errstr(result) ));
3012 result = cli_rpc_pipe_open_schannel_with_key
3013 (conn->cli, &ndr_table_lsarpc, NCACN_NP,
3014 domain->name, p_creds, &conn->lsa_pipe);
3016 if (!NT_STATUS_IS_OK(result)) {
3017 DEBUG(10,("cm_connect_lsa: failed to connect to LSA pipe for "
3018 "domain %s using schannel. Error was %s\n",
3019 domain->name, nt_errstr(result) ));
3022 DEBUG(10,("cm_connect_lsa: connected to LSA pipe for domain %s using "
3023 "schannel.\n", domain->name ));
3025 result = rpccli_lsa_open_policy(conn->lsa_pipe, mem_ctx, True,
3026 SEC_FLAG_MAXIMUM_ALLOWED,
3028 if (NT_STATUS_IS_OK(result)) {
3032 DEBUG(10,("cm_connect_lsa: rpccli_lsa_open_policy failed, trying "
3035 TALLOC_FREE(conn->lsa_pipe);
3039 if (lp_winbind_sealed_pipes() || lp_require_strong_key()) {
3040 result = NT_STATUS_DOWNGRADE_DETECTED;
3041 DEBUG(1, ("Unwilling to make LSA connection to domain %s"
3042 "without connection level security, "
3043 "must set 'winbind sealed pipes = false' and "
3044 "'require strong key = false' to proceed: %s\n",
3045 domain->name, nt_errstr(result)));
3049 result = cli_rpc_pipe_open_noauth(conn->cli,
3052 if (!NT_STATUS_IS_OK(result)) {
3056 result = rpccli_lsa_open_policy(conn->lsa_pipe, mem_ctx, True,
3057 SEC_FLAG_MAXIMUM_ALLOWED,
3060 if (!NT_STATUS_IS_OK(result)) {
3061 invalidate_cm_connection(domain);
3065 *cli = conn->lsa_pipe;
3066 *lsa_policy = conn->lsa_policy;
3070 /****************************************************************************
3071 Open a LSA connection to a DC, suiteable for LSA lookup calls.
3072 ****************************************************************************/
3074 NTSTATUS cm_connect_lsat(struct winbindd_domain *domain,
3075 TALLOC_CTX *mem_ctx,
3076 struct rpc_pipe_client **cli,
3077 struct policy_handle *lsa_policy)
3081 if (domain->can_do_ncacn_ip_tcp) {
3082 status = cm_connect_lsa_tcp(domain, mem_ctx, cli);
3083 if (NT_STATUS_EQUAL(status, NT_STATUS_ACCESS_DENIED) ||
3084 NT_STATUS_EQUAL(status, NT_STATUS_RPC_SEC_PKG_ERROR) ||
3085 NT_STATUS_EQUAL(status, NT_STATUS_NETWORK_ACCESS_DENIED)) {
3086 invalidate_cm_connection(domain);
3087 status = cm_connect_lsa_tcp(domain, mem_ctx, cli);
3089 if (NT_STATUS_IS_OK(status)) {
3094 * we tried twice to connect via ncan_ip_tcp and schannel and
3095 * failed - maybe it is a trusted domain we can't connect to ?
3096 * do not try tcp next time - gd
3098 * This also prevents NETLOGON over TCP
3100 domain->can_do_ncacn_ip_tcp = false;
3103 status = cm_connect_lsa(domain, mem_ctx, cli, lsa_policy);
3108 /****************************************************************************
3109 Open the netlogon pipe to this DC. Use schannel if specified in client conf.
3110 session key stored in conn->netlogon_pipe->dc->sess_key.
3111 ****************************************************************************/
3113 static NTSTATUS cm_connect_netlogon_transport(struct winbindd_domain *domain,
3114 enum dcerpc_transport_t transport,
3115 struct rpc_pipe_client **cli)
3117 struct messaging_context *msg_ctx = winbind_messaging_context();
3118 struct winbindd_cm_conn *conn;
3120 enum netr_SchannelType sec_chan_type;
3121 struct netlogon_creds_CredentialState *netlogon_creds = NULL;
3122 struct cli_credentials *creds = NULL;
3126 result = init_dc_connection_rpc(domain, domain->rodc);
3127 if (!NT_STATUS_IS_OK(result)) {
3131 conn = &domain->conn;
3133 if (rpccli_is_connected(conn->netlogon_pipe)) {
3134 *cli = conn->netlogon_pipe;
3135 return NT_STATUS_OK;
3138 TALLOC_FREE(conn->netlogon_pipe);
3139 conn->netlogon_flags = 0;
3140 TALLOC_FREE(conn->netlogon_creds);
3142 result = get_trust_credentials(domain, talloc_tos(), true, &creds);
3143 if (!NT_STATUS_IS_OK(result)) {
3144 DEBUG(10, ("cm_connect_sam: No no user available for "
3145 "domain %s when trying schannel\n", domain->name));
3146 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
3149 if (cli_credentials_is_anonymous(creds)) {
3150 DEBUG(1, ("get_trust_credential only gave anonymous for %s, unable to make get NETLOGON credentials\n",
3152 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
3155 sec_chan_type = cli_credentials_get_secure_channel_type(creds);
3156 if (sec_chan_type == SEC_CHAN_NULL) {
3157 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
3161 result = rpccli_create_netlogon_creds_with_creds(creds,
3165 &conn->netlogon_creds);
3166 if (!NT_STATUS_IS_OK(result)) {
3167 DEBUG(1, ("rpccli_create_netlogon_creds failed for %s, "
3168 "unable to create NETLOGON credentials: %s\n",
3169 domain->name, nt_errstr(result)));
3173 result = rpccli_setup_netlogon_creds_with_creds(conn->cli, transport,
3174 conn->netlogon_creds,
3175 conn->netlogon_force_reauth,
3177 conn->netlogon_force_reauth = false;
3178 if (!NT_STATUS_IS_OK(result)) {
3179 DEBUG(1, ("rpccli_setup_netlogon_creds failed for %s, "
3180 "unable to setup NETLOGON credentials: %s\n",
3181 domain->name, nt_errstr(result)));
3185 result = netlogon_creds_cli_get(conn->netlogon_creds,
3188 if (!NT_STATUS_IS_OK(result)) {
3189 DEBUG(1, ("netlogon_creds_cli_get failed for %s, "
3190 "unable to get NETLOGON credentials: %s\n",
3191 domain->name, nt_errstr(result)));
3194 conn->netlogon_flags = netlogon_creds->negotiate_flags;
3195 TALLOC_FREE(netlogon_creds);
3198 if (!(conn->netlogon_flags & NETLOGON_NEG_AUTHENTICATED_RPC)) {
3199 if (lp_winbind_sealed_pipes() || lp_require_strong_key()) {
3200 result = NT_STATUS_DOWNGRADE_DETECTED;
3201 DEBUG(1, ("Unwilling to make connection to domain %s"
3202 "without connection level security, "
3203 "must set 'winbind sealed pipes = false' and "
3204 "'require strong key = false' to proceed: %s\n",
3205 domain->name, nt_errstr(result)));
3206 invalidate_cm_connection(domain);
3209 result = cli_rpc_pipe_open_noauth_transport(conn->cli,
3211 &ndr_table_netlogon,
3212 &conn->netlogon_pipe);
3213 if (!NT_STATUS_IS_OK(result)) {
3214 invalidate_cm_connection(domain);
3218 *cli = conn->netlogon_pipe;
3219 return NT_STATUS_OK;
3222 /* Using the credentials from the first pipe, open a signed and sealed
3223 second netlogon pipe. The session key is stored in the schannel
3224 part of the new pipe auth struct.
3227 result = cli_rpc_pipe_open_schannel_with_key(
3228 conn->cli, &ndr_table_netlogon, transport,
3230 conn->netlogon_creds,
3231 &conn->netlogon_pipe);
3232 if (!NT_STATUS_IS_OK(result)) {
3233 DEBUG(3, ("Could not open schannel'ed NETLOGON pipe. Error "
3234 "was %s\n", nt_errstr(result)));
3236 invalidate_cm_connection(domain);
3240 *cli = conn->netlogon_pipe;
3241 return NT_STATUS_OK;
3244 /****************************************************************************
3245 Open a LSA connection to a DC, suiteable for LSA lookup calls.
3246 ****************************************************************************/
3248 NTSTATUS cm_connect_netlogon(struct winbindd_domain *domain,
3249 struct rpc_pipe_client **cli)
3253 status = init_dc_connection_rpc(domain, domain->rodc);
3254 if (!NT_STATUS_IS_OK(status)) {
3258 if (domain->active_directory && domain->can_do_ncacn_ip_tcp) {
3259 status = cm_connect_netlogon_transport(domain, NCACN_IP_TCP, cli);
3260 if (NT_STATUS_EQUAL(status, NT_STATUS_ACCESS_DENIED) ||
3261 NT_STATUS_EQUAL(status, NT_STATUS_RPC_SEC_PKG_ERROR) ||
3262 NT_STATUS_EQUAL(status, NT_STATUS_NETWORK_ACCESS_DENIED)) {
3263 invalidate_cm_connection(domain);
3264 status = cm_connect_netlogon_transport(domain, NCACN_IP_TCP, cli);
3266 if (NT_STATUS_IS_OK(status)) {
3271 * we tried twice to connect via ncan_ip_tcp and schannel and
3272 * failed - maybe it is a trusted domain we can't connect to ?
3273 * do not try tcp next time - gd
3275 * This also prevents LSA over TCP
3277 domain->can_do_ncacn_ip_tcp = false;
3280 status = cm_connect_netlogon_transport(domain, NCACN_NP, cli);
3285 void winbind_msg_ip_dropped(struct messaging_context *msg_ctx,
3288 struct server_id server_id,
3291 struct winbindd_domain *domain;
3292 char *freeit = NULL;
3296 || (data->data == NULL)
3297 || (data->length == 0)
3298 || (data->data[data->length-1] != '\0')) {
3299 DEBUG(1, ("invalid msg_ip_dropped message: not a valid "
3304 addr = (char *)data->data;
3305 DEBUG(10, ("IP %s dropped\n", addr));
3307 if (!is_ipaddress(addr)) {
3310 * Some code sends us ip addresses with the /netmask
3313 slash = strchr(addr, '/');
3314 if (slash == NULL) {
3315 DEBUG(1, ("invalid msg_ip_dropped message: %s",
3319 freeit = talloc_strndup(talloc_tos(), addr, slash-addr);
3320 if (freeit == NULL) {
3321 DEBUG(1, ("talloc failed\n"));
3325 DEBUG(10, ("Stripped /netmask to IP %s\n", addr));
3328 for (domain = domain_list(); domain != NULL; domain = domain->next) {
3329 char sockaddr[INET6_ADDRSTRLEN];
3331 if (!cli_state_is_connected(domain->conn.cli)) {
3335 print_sockaddr(sockaddr, sizeof(sockaddr),
3336 smbXcli_conn_local_sockaddr(domain->conn.cli->conn));
3338 if (strequal(sockaddr, addr)) {
3339 smbXcli_conn_disconnect(domain->conn.cli->conn, NT_STATUS_OK);
3342 TALLOC_FREE(freeit);